ISTRUZIONI ORIGINALI
TECHNICAL INFORMATION
42/43
87-900-136-01
WARNING!
The operation with damaged elastic element
causes an anomalous pump noise, especially
when starting the pump and may lead to coupling
and pump shaft failure.
Pump overhaul procedure
For this operation please require the proper in-
structions and direct any questions to our Cus-
tomer Service department.
The overhaul consists of a complete disassembly,
cleaning of all components as well as replacement
of parts that are subject to wear (pump and motor
bearings, vanes and gaskets).
SPARE PARTS
Spares necessary for normal servicing
Varian recommends the use of spare parts as fol-
lows;
1) Spare parts included in the “Minor Mainte-
nance Kit” listed on pages 32 and 39 with
(A) and indicated in the relevant Pump
Parts tables. These parts are needed for
ordinary maintenance operations to be
performed by users or by Varian person-
nel.
2) Spare parts included in the “Major Mainte-
nance Kit” listed on pages 32 and 39 with
(B) and indicated in the relevant Pump
Parts tables. These parts are needed for
more complex maintenance operations to
be performed mostly by Varian personnel.
3) Spare parts included in the “Inlet Valve Kit”
listed on pages 32 and 39 with (C) and in-
dicated in the relevant Pump Parts tables.
These parts are needed in case of anti-
suckback valve maintenance.
4) Other spare parts, listed with (SR….) on
the Pump Parts tables at pages 31 and 38
are available for sales to Varian custom-
ers.
How to order spare parts
When ordering spare parts, always state the pump
model (type), serial number, year of production,
electric motor characteristics (three-phase, power,
voltage, frequency), position reference on the
spare parts list, description and quantity needed.
Orderable parts
DESCRIPTION PART
NUMBER
Major Spare Parts Kit (for MS-301 mod-
els)
949-5021
Minor Spare Parts Kit (for MS-301 mod-
els)
949-5020
Inlet Valve Kit (for MS-301 models)
SR03705715
Major Spare Parts Kit (for MS-631 mod-
els)
949-5088
Minor Spare Parts Kit (for MS-631 mod-
els)
949-5087
Inlet Valve Kit (for MS-631 models)
SR03705717
Oil filter (for MS-301 models)
949-5070
Oil filter (for MS-631 models)
949-5090
Inlet Air Filter with Polyester Cartridge (for
MS-301 models)
949-5083
Inlet Air Filter with Polyester Cartridge for
2” gas connection (for MS-301 models)
949-5059
Inlet Air Filter with Polyester Cartridge with
DN 63 ISO-K flange connection (for MS-
301 models)
949-5159
Connection Fitting Kit, for 2” Gas connec-
tion (for MS-301 models)
949-5065
Connection Fitting Kit, DN 63 ISO-K
flange connection (for MS-301 models)
949-5165
Oil Level Protection Switch (for MS-301
models)
949-5078
Inlet Air Filter with Polyester Cartridge (for
MS-631 models)
949-5089
Inlet Air Filter with Polyester Cartridge for
4” gas connection (for MS-631 models)
949-5062
Inlet Air Filter with Polyester Cartridge with
DN 100 ISO-K flange connection (for MS-
631 models)
949-5162
Connection Fitting Kit, for 4” Gas connec-
tion (for MS-631 models)
949-5066
Connection Fitting Kit, DN 100 ISO-K
flange connection (for MS-631 models)
949-5166
Oil Level Protection Switch (for MS-631
models)
949-5079
Pump Thermal Protection Switch
949-5076
Oil Separator Control Pressure Switch
949-5077
Pump side coupling half (for MS-301)
SR03705716
Elastic coupling insert (for MS-301)
SR03705719
Motor side coupling half (for MS-301)
SR03705718
Electric motor M132 B5 4P 5.5kW 50Hz
(for MS-301)
SR03705592
Electric motor M132 B5 4P 7.5kW 60Hz
(for MS-301)
SR03705721
Pump side Coupling half (for MS-631)
SR03705723
Electric motor M180L B5 6P 15kW 50Hz
(for MS-631)
SR03705726
Electric motor M200LA B5 6P 18.5kW
60Hz (for MS-631)
SR03705727
